xxxanitaxxx

01.04.2021 • 

Mathematics

You are deciding about a food delivery service. They emailed you an $80 off coupon for signing up, each week after that costs $70. Your regular weekly grocery bill is $60. How many weeks would it take to cost the same? How much would it cost? Define your variables, write and solve equations, answer in a complete sentence.

Ответ:

jeffyisdrunk

01.07.2020

Mathematics

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Its answer choice B

Step-by-step explanation:

The upper number is the upper limit and lower number is the index

So the equation will go up to 3

(0^2 +3) + (1^2 + 3) +(2^2 +3) + (3^2 + 3)

(0+3)+(1+3)+(4+3)+(9+3)

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